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A sample of methane gas, CH4, occupies a volume of 44.1 L at a pressure of 5.28 atm. What volume will the gas occupy if the pressure is lowered to 2.47 atm? A sample of a gas occupies a volume of 1100 mL at 75ºC and 0.17 atm. What would be the new volume if the temperature decreased to 45ºC and the pressure increased to 1.90 atm? An expandable balloon contains 1500 L of He at 0.829 atm pressure and 18 ºC. At an altitude of 22 miles (temperature 4.4 ºC and pressure 3.4 torr), what will the volume of the balloon be?
The cylinder diameter is 2 inches and the depth of the water in the cylinder is 4 inches. Determine the concentration of salt in solution, showing your answer in the units specified.
A 25.00-mL sample of well water containing dissolved iron was treated with hydroxylamine hydrochloride, pH 5 buffer, and 1,10-phenanthroline, and diluted to 100.0 mL. Absorbances were measured at 510 nm using a 1.00-cm cell.
What mass of sodium phosphate would have to be added to 2.0 of this solution to completely eliminate the hard water ions? Assume complete reaction.
Acetone, like dimethyl ether, has no self-hydrogen bonding capacity, but its dipole moemnt is more than double that of the ether. Can this high dipole moment explain the properties of acetone compared to the other compounds
The Viking version of the afterlife was an extension of what was important to them on Earth: bravery in battle. Describe what the afterlife might look like to a culture that valued a theme of your choosing
Benzene and biphenyl are typical by-produdcts of these grignard reactions. Give mechanisms for their formation. IR would not be of much use in differentiating these two byproducts
What is the OH- in a solution that has a pH of 4.92? Give your answer to 3 significant figures using E-notation (i.e., 1 number before and 2 after the decimal point)
a. Assuming that the original unknown mixture contained KCIO3 and KCI with combined mass of 2.1307g, calculate the mass of KCI in the unknown mixture. b. Calculate the percent of KCIO3 in the unknown mixture. c. Calculate the percent of KCI in the ..
A 1.00 L buffer solution is .250 M in HF and .250 M in LiF. Calculate the pH of the solution after the addition of .15 moles of solid HI. Assume no volume change. Ka for HF at 25C is 3.5x10^-4
Question- The corona of the sun emits a spectral line at about 677 m due to the presence of an ionized 57Fe atom (molar mass of 0.0569 kg mol^-1). If the line has a width of 0.053 nm what is the temperature of the corona
Compare and contrast the accuracy and precision of at least three types of measurements used in life
How many grams will remain after 98.0 days if Phosphorus-32 has a half-life of 14.0 days Starting with 6.00g of ,?
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